Beatlemania swept the U.S. in the 1960s. Less than 20 years later, the band had broken up and John Lennon was killed in front of his NYC home. Get information on the murder and find out where the principal players are 30 years after the crime.

Jack the Ripper killed at least 5, perhaps as many as 18 or more, women in the 1800s. Yet his identity was never discovered and is a point of debate to this day. Read about some theories to his (or her!) identity.

Postal worker Diane Downs shocked the nation in 1983 when she stood accused of one of the most unthinkable crimes ever-killing one of her own children and attempting to murder the other two. Learn about the case and get updates here.

Love or lust? Soul mate or predator? The questions raised by the Mary Kay Letourneau case still come up over 10 years after her arrest. Read about the background of the case in part one of my Letourneau series.

The horrific torture and murder of 12-year-old Shanda Sharer in 1992 shocked the nation. The case became even more disturbing when the killers' identities and motive were revealed. Part one in a series.

Everyone loves a clown! Well, actually, not everyone-some people are terrified of them. Perhaps John Wayne Gacy had something to do with this fear. Read about Pogo the Clown's sinister killing spree here.

With quite possibly the least thought-out disguise in history, Kasey Kazee attempted to rob a liquor store in Kentucky in 2007. Read about the "Duct Tape Bandit" here and ask yourself, "What was he THINKING?"